Add CLI option to disable safety parameter clamping (cli_safe_params)

[gommzystudio]

This PR introduces a new configuration option cli_safe_params (default: true) which controls whether the CLI applies built-in safety limits to machine parameters such as acceleration.

Motivation:
Power users may want to apply custom values beyond the default safety limits (e.g., machine_max_acceleration_x = 12000) for experimental or performance-driven use cases.
Until now, the CLI forcibly clamped such values (e.g., to 6000) even if they were explicitly set in machine.json.

What this adds:
• New config entry cli_safe_params (type: bool)
• When set to false, the CLI will skip the safety check and use the values defined in config files as-is.
• Default behavior remains unchanged to protect less experienced users.

Example usage:
BambuStudio --cli_safe_params=false --load machine.json --load process.json --export_gcode